my Volkswagen Golf MK7 has a check engine light with a P0302 code, what does that mean?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool before proceeding.

2. Remove Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Disconnect the electrical connector from the ignition coil of cylinder 2.
• Unscrew the ignition coil using the socket set and carefully pull it out.
• Remove the spark plug from cylinder 2 using the spark plug socket.

3. Inspect and Replace Components

• Inspect the spark plug for signs of wear, carbon buildup, or damage. Replace if necessary.
• Test the ignition coil with a multimeter to ensure it operates within specifications. Replace if faulty.
• If no issues are found, check the fuel injector for proper operation and replace if needed.

4. Reassemble

• Install the new or inspected spark plug and torque to the manufacturer's specification (usually between 18-25 ft-lbs).
• Reinstall the ignition coil and torque to manufacturer specifications (typically around 7-10 ft-lbs).
• Reconnect the electrical connector to the ignition coil.
• Reattach the engine cover if it was removed.

5. Final Steps

• Reconnect the battery.
• Start the engine and allow it to idle, checking for any irregularities.